Ether-dropper.



E GAMBLE. ETIIER DROPPER. APPLICATION FILED SEPT- 29| I916 Patented Aug. 21, 1917.

JELLSWORTH GAMBLE, F WAVEBLY, NEW YORK n'rnnn-nnorrnn.

mamas.

Specification of Letters Patent.

Patented Aug. er, ieiv.

Application filed September 29, 1916. Serial No. 122,928.

scribed and claimed.

An object of the invention is to provide a dropper of the character. indicated which is of simple and durable structure and which when applied will permit the ether to drop freely from the container without waste. Also when the device is not in use means is provided for automatically and effectually closing the same whereby the container maybe thrown about, overthrown or carried in the satchel .of a physician without danger curely held in position thereon. The said body is provided at one end with a vent through which the ether is adapted to flow all m use.

and at its side portion with a vent adapted to admit air into the body and from the body the said air may pass into the container through the pipe when the device is A spring pressed rod is slidably mounted upon the body and carries valves which are adapted to normally close the vents of the body.

In the accompanying drawings Figure 1 is a longitudinal sectional view of the ether dropper;

Fig. 2 is a transverse sectional view of the samecut on the line 22 of Fig. 1.

Fig. 3 is an under plan view of a nut used in conjunction with the dropper. Fig. 4 is an edge view of the same. The ether dropper comprises a body 1 which is provided with a passage 5 extending through the same from end to end thereof. The said body 1 is further provided with a vent 3 which is located at one side of the passage 5 and a tube 4 is connected with the said vent 3. The upper end of the vent 3 enters an extension 6 of the said body 1 and the said extension is provided with a vent 7 which communicates with the vent 3. Spaded ears 8 are provided upon the body 1 and a rod 9 is slidably mounted in the said ears. A handle 10 is mounted upon the rod 9 at points between the ears 8 and a spring 11 bears at one end against the upper ear 8 and at its other end against the said handle 10. A valve 12 is carried at the upper end of the rod 9 and is adapted to close against the upper end of the passage 5 in the body 1. A valve 13 is carried at the lower end of the rod 9 and is adapted to close against the upper end of the vent 7. The spring 11 is under tension with a tendency to simultaneously hold the valves 12 and 13 closed against the passage 5 and the vent 7. However when the rod 9 is moved in an upward direction by using the handle 10, the said valves 12 and 13 are removed from the passage and vent. The lower portion of the body 1 is externally screw threaded as at 15 and a nut 16 engages the said thread. The nut 16 is provided at its underside with a recess 17 adapted to fit over the spout of a container as illustrated in Fig. 1 of the drawing. The lower portion of the body 1 is provided with a washer 14 which is adapted to fit within the spout of the container. When it is desired to use the other the container is inverted whereby the ether may flow into and through the passage 5. At this time the operator has manipulated the handle 10 whereby the rod 9 is moved and the valve 12 is carried away from the end of the passage 5 and the valve 13 away from the end of the vent 7, consequently as the ether flows out of the container through the passage 5 air may enter the container through the vents 7 and 3 and the tube 4. When a suflicient quantity of other has been drawn from the container pressure is removed from the handle 10 whereby the tension of the spring 11 comes into play and the rod 9 is moved longitudinally thus closing the valves 12 and 13 against the passage and vent and edectually sealing the same and thus preventing leakage of the ether from the container.

- Consequently air may flow into the container through the vents 7 and 3 and pipe 4. Thus the ether may flow from the container' through the vent 5. When a suificient quantity of ether has been withdrawn from the container, pressure is removed from the lug 10 whereby the tension of the spring 11 comes into play and the rod'9 is moved longitudinally thus closing the valves 12 and 13 against their respective vents and the device is efl'ectually sealed which prevent the leakage of the ether.

From the foregoing description taken' in connection with the accompanying drawing, it will be seen that an ether dropper of simple and durable structure is provided and that the same when not in use for dispensing'the ether is efi'ectually sealed and will prevent the leakage of the ether from the container notwithstanding the fact that the said container may be overturned or subjected to rough handling or use or carried in the satchel of a physician.

Having described the invention what is claimed is An ether dropper comprising a body having a passage extending through the same and provided at its side with an extension,

'there being a vent portion through the body and the said extension, said body also hav ing at its side spaced ears, a rod slidably mounted in the ears and carrying at its ends valves adapted to close against the passage and vents respectively, a handle mounted upon the red at a point between the ears and a spring bearing at one end against one of the ears and at its other end against said rod and being under tension with a tendency to normally hold the valves in closed positions against the-passage and vents and means for attaching the body to a container. In testimony whereof I afiix my signature.

ELLSWORTH GAMBLE. 

